persist and recall domain-server web sessions from ini settings

domain-server/src/DomainServer.cpp

@@ -50,6 +50,9 @@ DomainServer::DomainServer(int argc, char* argv[]) :
     setOrganizationDomain("highfidelity.io");
     setApplicationName("domain-server");
     QSettings::setDefaultFormat(QSettings::IniFormat);
+    
+    qRegisterMetaType<DomainServerWebSessionData>("DomainServerWebSessionData");
+    qRegisterMetaTypeStreamOperators<DomainServerWebSessionData>("DomainServerWebSessionData");
 
     _argumentVariantMap = HifiConfigVariantMap::mergeCLParametersWithJSONConfig(arguments());
 
@@ -59,6 +62,8 @@ DomainServer::DomainServer(int argc, char* argv[]) :
 
         qDebug() << "Setting up LimitedNodeList and assignments.";
         setupNodeListAndAssignments();
+        
+        loadExistingSessionsFromSettings();
     }
 }
 
@@ -1407,6 +1412,9 @@ void DomainServer::handleProfileRequestFinished() {
     }
 }
 
+
+const QString DS_SETTINGS_SESSIONS_GROUP = "web-sessions";
+
 Headers DomainServer::setupCookieHeadersFromProfileReply(QNetworkReply* profileReply) {
     Headers cookieHeaders;
     
@@ -1417,7 +1425,14 @@ Headers DomainServer::setupCookieHeadersFromProfileReply(QNetworkReply* profileR
     QJsonObject userObject = profileDocument.object()["data"].toObject()["user"].toObject();
     
     // add the profile to our in-memory data structure so we know who the user is when they send us their cookie
-    _cookieSessionHash.insert(cookieUUID, DomainServerWebSessionData(userObject));
+    DomainServerWebSessionData sessionData(userObject);
+    _cookieSessionHash.insert(cookieUUID, sessionData);
+    
+    // persist the cookie to settings file so we can get it back on DS relaunch
+    QSettings localSettings;
+    localSettings.beginGroup(DS_SETTINGS_SESSIONS_GROUP);
+    QVariant sessionVariant = QVariant::fromValue(sessionData);
+    localSettings.setValue(cookieUUID.toString(), QVariant::fromValue(sessionData));
     
     // setup expiry for cookie to 1 month from today
     QDateTime cookieExpiry = QDateTime::currentDateTimeUtc().addMonths(1);
@@ -1435,6 +1450,17 @@ Headers DomainServer::setupCookieHeadersFromProfileReply(QNetworkReply* profileR
     return cookieHeaders;
 }
 
+void DomainServer::loadExistingSessionsFromSettings() {
+    // read data for existing web sessions into memory so existing sessions can be leveraged
+    QSettings domainServerSettings;
+    domainServerSettings.beginGroup(DS_SETTINGS_SESSIONS_GROUP);
+    
+    foreach(const QString& uuidKey, domainServerSettings.childKeys()) {
+        _cookieSessionHash.insert(QUuid(uuidKey), domainServerSettings.value(uuidKey).value<DomainServerWebSessionData>());
+        qDebug() << "Pulled web session from settings - cookie UUID is" << uuidKey;
+    }
+}
+
 void DomainServer::refreshStaticAssignmentAndAddToQueue(SharedAssignmentPointer& assignment) {
     QUuid oldUUID = assignment->getUUID();
     assignment->resetUUID();

domain-server/src/DomainServer.h

@@ -93,6 +93,8 @@ private:
     void handleProfileRequestFinished();
     Headers setupCookieHeadersFromProfileReply(QNetworkReply* profileReply);
     
+    void loadExistingSessionsFromSettings();
+    
     QJsonObject jsonForSocket(const HifiSockAddr& socket);
     QJsonObject jsonObjectForNode(const SharedNodePointer& node);
     

domain-server/src/DomainServerWebSessionData.cpp

@@ -51,3 +51,13 @@ void DomainServerWebSessionData::swap(DomainServerWebSessionData& otherSessionDa
     swap(_roles, otherSessionData._roles);
 }
 
+QDataStream& operator<<(QDataStream &out, const DomainServerWebSessionData& session) {
+    out << session._username << session._roles;
+    return out;
+}
+
+QDataStream& operator>>(QDataStream &in, DomainServerWebSessionData& session) {
+    in >> session._username >> session._roles;
+    return in;
+}
+

domain-server/src/DomainServerWebSessionData.h

@@ -26,6 +26,9 @@ public:
     const QString& getUsername() const { return _username; }
     const QSet<QString>& getRoles() const { return _roles; }
     
+    friend QDataStream& operator<<(QDataStream &out, const DomainServerWebSessionData& session);
+    friend QDataStream& operator>>(QDataStream &in, DomainServerWebSessionData& session);
+    
 private:
     void swap(DomainServerWebSessionData& otherSessionData);
     
@@ -33,4 +36,6 @@ private:
     QSet<QString> _roles;
 };
 
+Q_DECLARE_METATYPE(DomainServerWebSessionData)
+
 #endif // hifi_DomainServerWebSessionData_h